fixed bug with signs
Merge branch 'master' of github.com:cvxgrp/cvxpy

* 'master' of github.com:cvxgrp/cvxpy:
  Added clarification on norm(X,"nuc") and "fro"
  added conda-recipe to bump version
  Bump version: 0.2.7 → 0.2.8
  removed a stray println
  removed a stray println
  added conda recipe
  Bump version: 0.2.6 → 0.2.7
  added statuses for inaccurate solutions
  fixed the warning for not importing cvxpy
  added negative indices
added examples and fixed failing test